Loom and the fabric produced thereby



v w. B. CAMPBELLAND cfw. SIHICKER.

LOOM AND THE FABRIC PRODUCED THEREBY, APPLICATION man Auc.19.191s.

Patented Jan. 31, 1922.

2 snaps-sun I- v I T? 6 g1 '1 v w. B. CAMPBELL AND 0. w. STRICKER. LOOM AND THE FABmc PRQDUCED T HEREBY.

APPLICATION FILED AUQJQ, I918- v I 1 495,? Patented Jan. 31, 1922.

2 SHEET-S-SHEET i.

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'WENDELL B. CAMPBELL AND CLAREI T'GE "W. STRICT-KER, Q CIIEGIEINATI, EH14}, .RQSIGII'QES, BY DIREQT .snn MESHE ASEHGrNIfl'ENTS, 3F C NE-HALF 57% THE EERKHJS CAHFBELL (ml-KEANE, F CINCINNATI, (EH10, it. CQRPGRATEON (BF 915.10, 53133 ONE-HAL T9 SAID GAIEIZPfiELIZ.

L903)! AIME FABRIG PZd/GDUCED THEEEB'EZ.

Specification of Letters Ti'atent.

Patented Jan. 331, 3.922. 0

Application filed August 19, 1918. Serial No. 250,451.

T 0 all whom it may concern Be itknown that we, W ENDELL B. CAMP- BELL and CLARENCE W. STnIoKnn, citizens of the United States, and residents of Cid cinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Looms and the Fabric Produced Thereby, of which the following is a full, clear, and exact description, reference being bad. to the accompanying drawings,

, forming part of this specification.

The object of our invention is to weave fabrics very much more rapidly than can be accomplished on the ordinary loom whether of the shuttle or needle type, and while adopting the needle loom type, our object is to obtain a uniform selvage for each edge of the fabric as in the shuttle loom.

Qur invention is especially applicable for the weaving of narrow material such as' bands, braid, ribbon, belting and the like, although the rinciples of the invention are equally applicable for the weaving of wider material, and we do not wish tobe limited to the weaving of mere narrow fabric.

Needle looms have long been in use for weaving such narrow fabrics, and the principle involved is to carry the weftthread through the shed by a needle which is passed between the warp threads and either caught on the opposite side or looped over a warp thread to permit the needle to be withdrawn in the same path that it entered and before the warp threads otthe shed are changed.

in the process of weaving in the ordinary shuttle loom, in which the shuttle is passed back and forth through the shed, the operation is necessarily slow. While in the needle loom as ordinarily employed, except with the use of two needles and the employment of complicated devices of various kinds, it has not been possible to provide for the same selvage along each edge.

The essential principle of our invention consists in the utilization in the loom are of the sewing machine principle for applying the filling or weft threads, and in its essence we have adopted the lock stitch principle of the two-thread sewing machine and we have substituted tor the fabric which is operated on in the sewing machine the warp threads of the loom.

With this construction we are able to weave es ecially narrow fabric with great rapidity. nly a comparatively slight opening l'ietween the threaos forming the shed is required, and a very short throw for the ho ddles and the lay.

The fabric produced is also novel in that the selvage is the same on each edge, and in that the outer thread furnished by the bohbin is drawn into the shed and benmes a part of the filling of the fabric.

@ur invention therefore consists of the combination of instrumentalities to be here inatter pointed out and claimed irrespective of the particular details of construction and specific methods of operating the several instrumentalities.

ln illustrating our invention, in'the drawings we have therefore only shown such portions of the mechanism as will make clear the construction and operation of the parts by which our method is carried out.

In the drawings,

Figure 1 is a plan view of a portion of the loom framework showing the needle in the position it occupies after passing through the shed as the thread is being looped around the bobbin thread.

Figure 2 is a similar view, with the needle .withdrawn just prior to the action of the take-up in pulling on the loop.

Figure 3 illustrates the parts with the bobbin thread taken up and the lay in posi-- tion to press down the threads.

Figure 4 is an enlarged view of the fabric showing the position of the threads.

The shed is indicated at 1, the woven fabric at 2, which is wound or rolled up on the roll 3 automatically as the fabric is woven, in the well known way. The lay is indicated at a, operated to press down the weft in the usual way. it e have not shown the harness for shifting the warp threads 95 with each operation, nor the other operating mechanism of the loom, as our invent tion. as heretofore indicated, has to do with the application of the weft threads to the fabric.

' the outivn l moveu'ieht of lhe lay. the hede The needle 5. provided with an (3 in its outer end, carries the weft thread 7 from a spool (hot shown), the spool being under proper tension. The needle as illustrated is curved lo facilitate its passage through the wider portion of the shco, and extends in an angle from the rock arm 8 mounied on the shaft 9 jouruuled in blue framework. This shaft is provided with the pinion 10 which engages a rack bur 11 arranged to be reciprocal ed by ihe power mechanism of the machine and guided in a. suitable guideway 12 secured on a portion of the framework 13 of she machine. The reciprocation of the rack will cause the needle to reciprocate buck and forth through she shed of warp threads.

lil ounied to roisie Wiihthe movement of the needle driven illustrated in the drawings by a sprocket chain i l is an ordinary rotating shuttle 15, such as is ii oomnion use in the two-thread sewin machines. The type shown is the loch-sitizch shuitle for the sewing mach ne, provided. with s rolating looper 16, a point of which enters the loop of the needle ihread and carries it around the bobbin 17 which furnishes the bobbin thread 18, the aciion being to form a. loop 19 betweeu o well shread and the bobbin thread, The thread is ihreeded from the spool through eyeflll on the mire-up arm 21, which is provided Wish the proper tension devices es in the sewing ineehine to lake up ithe thread at proper timed intervals.

The operation of the mechanism will be clear from u oonsidereiion of lhe three views, Figures Ii, 2 which illustrate the posiiion oi the parts at various stages of the operution. in. Figure l the weft rhread has been (worried by the needle through-rho shell and the rotating looper driven in timed. relation to the movement of ihe needle is just about to pick up the loop. lu Figure 2 the sliding rack has been reeiprocaied and the needle drawn back through the shed with the well? thread looped through the loop of the bobbin thread, with the lake-up arm 2i about to begin iits action of drawing ihe loop light. in Figure 3 needle has mor to the end of its throw in the outer direction and the ialioup 2i. has drawn the loop l $1.01 the filling threa s into the central portion of she shed and the lay 4; has been rocked to press down the weft threads. and in push ElOIli. ready to press down the threads. llpon dies are shifted to ohange the w r threads, the take-up released and the needle is again driven i'riuward through the shed. the bobbiii its. es up the loop, lhe needle is withdrawn and tire takoup again draws the loop into the center of the fabric. in this way. woven fabric in whirh the isomers.

ihreads are disposed as illustrated iii-Figure 4-. The bobbin thread forms half or" the weft end the weft thread the oiher half. and exactly the same selvugo is produced on each edge.

ii; is of oourse not essential that the loop oi the weft threads should be brought to the middle line of fabric and the take-up I tension may be of course so regulated as to bring the loop to one side or the other of the middle line, and by automatically varying the action of the take-up the location of the loop oi the weft threads maybe readily changed.

ll; is of course not essential that the needle should be curved, as a. steright needle can be employed, although for some reasons the curved needle is preferable, as its path will be through a wider portion of the shed.

The advantages of our invention will, we believe, be obvious. As the sewing machine principle is adopted for the weaving in of the weft threadmexireine rapidity of movement may be obtained, and the lay and heddles may be loeatedcomparatively close to the path of the needle, and only e comparetively slight; movement of the heddles will be required for the shed.

Another great advantage obtained is that the bobbin thread becomes it part of the. weft end. the selvage is exactly the same along; each edge. -When beaten up by the lay. the loops disappear in the fabriv. and if with eerlein maierials the line of loops should show, ihe action of the takeaip can be eulonuitically and intermittently varied as stated above. so that the loops of hewel't threads shall not take any definite line.

As our invention, as heretofore described, relates to the employment in the loom oi the two-thread lock-stitch construction of the sewing mzu-hino art, it is obvious that the various mechanical. movements can be attabled in a great variety of ways without denart-iug from'the spirit of our invention, and we do not wish to be limited to the construction illustrated.

' Having thus described our inveuiion what we claim as new and desire to secure by Letters l aieul. iszl. in loom. the roiubiiiaiioi'i. with a frame and shed forming iiiechenism i'or the warp threads and two wei'i; threads, of means for dariying one o'l' the well threads through the shed aul back without changiu; the warp tlllQiHlf. h-H'h' stitch mechanism for looping the second wel't thread with the first wei't'l'hread. and means for drawing the second weft thread within the shed. to become a part of the iilliu 2. In a loom. the combination with a frame and shed iormingg; mechanism for the warp threads and two weft threads. oi a needle for carrying one of the well threads through the shed and back without. Chang;

ing the 1 threads, leek selfish mechanism for second weii threedwltn the first weft lireecl, and means for drawing Jhe second weft thread within the shed upon the back mevement of he needle to become apart, of the filling;

3. En. e loom the combination with olirame end. shed forming mechanism for the warp threads mid two We'fe bnreecls of aneedle for can? (me of me Weft vihremle hrough the sh ll back without changing blue were th 1d bobbin for lee}; a m with the first weft thread and i-c lie-up device for drawing the second Wefe thread Wl'tllin the shed upen the beak movement, of the neeqlle, to become a pest-e of 1g;

42. in loom, t

W combination with e frame and shed forming mechanism for the warp threads and two Weft threads, of a needle earrymg the Weft threads, and means for reciprocating the needle to carry said thread through the Shed end. back withovlt changing the threads, a rotary looper with a bobbin carrying the second Weft thread, and mechanism. for operating the some in aimed relation with the needle movement to loop the second Weft thread over the first thread, a take-up device to draw the second Weft thread within the shed midway of the side edges of the fabric upon the back movement of the needle, whereby the two Weft ehreads constitute each one half of the filling of the fabric.

EVENDELL B. CAMPBELL. CLARENCE W, STRECKER. 

